The differences in root morphology of several exotic cotton strains (T15, T25, T94, T141, T169, T184, T194, T212, T292, T466, T469, T488) as well as a number of commercial cultivars and strains ('Acala SJ5', 'Coker 5110', 'Deltapipe 16', Lubbock Dwarf, 'Paymaster 266', 'Stoneville 213', 'Tamcot 788') were characterized in young, dark grown seedlings.